Store all information given in VCF files

[christopher-mohr]

Information present in the INFO column and genotype (sample specific) information should be parsed and stored in the store.

Since the information that can be stored in there is not limited we store the information as defined in the file specifications and store additional information as VARCHAR.

File specifications:
http://samtools.github.io/hts-specs/VCFv4.1.pdf
http://samtools.github.io/hts-specs/VCFv4.2.pdf